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Tuning after installing a cat by-pass
I am going to have a cat by-pass installed in the next week or so. I was wondering what tuning should be done to compliment it? Should I consider the air box mod to allow in more air to go with the better breathing exhaust?
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03-13-2006, 06:04 PM
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1985 Porsche 911 Carrera 3.2
